23138572 has 12 divisors (see below), whose sum is σ = 40526640. Its totient is φ = 11559536.

The previous prime is 23138567. The next prime is 23138597. The reversal of 23138572 is 27583132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6738 + ... + 9574.

It is an arithmetic number, because the mean of its divisors is an integer number (3377220).

Almost surely, 2^23138572 is an apocalyptic number.

It is an amenable number.

23138572 is a deficient number, since it is larger than the sum of its proper divisors (17388068).

23138572 is a wasteful number, since it uses less digits than its factorization.

23138572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4880 (or 4878 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

The square root of 23138572 is about 4810.2569577934. The cubic root of 23138572 is about 284.9566857330.

The spelling of 23138572 in words is "twenty-three million, one hundred thirty-eight thousand, five hundred seventy-two".